Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / media / pci / cx18 / cx18-alsa.h

diff --git a/kernel/drivers/media/pci/cx18/cx18-alsa.h b/kernel/drivers/media/pci/cx18/cx18-alsa.h
new file mode 100644 (file)
index 0000000..2718be2
--- /dev/null
+++ b/kernel/drivers/media/pci/cx18/cx18-alsa.h
@@ -0,0 +1,74 @@
+/*
+ *  ALSA interface to cx18 PCM capture streams
+ *
+ *  Copyright (C) 2009  Andy Walls <awalls@md.metrocast.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA
+ */
+
+struct snd_card;
+
+struct snd_cx18_card {
+       struct v4l2_device *v4l2_dev;
+       struct snd_card *sc;
+       unsigned int capture_transfer_done;
+       unsigned int hwptr_done_capture;
+       struct snd_pcm_substream *capture_pcm_substream;
+       spinlock_t slock;
+};
+
+extern int cx18_alsa_debug;
+
+/*
+ * File operations that manipulate the encoder or video or audio subdevices
+ * need to be serialized.  Use the same lock we use for v4l2 file ops.
+ */
+static inline void snd_cx18_lock(struct snd_cx18_card *cxsc)
+{
+       struct cx18 *cx = to_cx18(cxsc->v4l2_dev);
+       mutex_lock(&cx->serialize_lock);
+}
+
+static inline void snd_cx18_unlock(struct snd_cx18_card *cxsc)
+{
+       struct cx18 *cx = to_cx18(cxsc->v4l2_dev);
+       mutex_unlock(&cx->serialize_lock);
+}
+
+#define CX18_ALSA_DBGFLG_WARN  (1 << 0)
+#define CX18_ALSA_DBGFLG_INFO  (1 << 1)
+
+#define CX18_ALSA_DEBUG(x, type, fmt, args...) \
+       do { \
+               if ((x) & cx18_alsa_debug) \
+                       printk(KERN_INFO "%s-alsa: " type ": " fmt, \
+                               v4l2_dev->name , ## args); \
+       } while (0)
+
+#define CX18_ALSA_DEBUG_WARN(fmt, args...) \
+       CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_WARN, "warning", fmt , ## args)
+
+#define CX18_ALSA_DEBUG_INFO(fmt, args...) \
+       CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_INFO, "info", fmt , ## args)
+
+#define CX18_ALSA_ERR(fmt, args...) \
+       printk(KERN_ERR "%s-alsa: " fmt, v4l2_dev->name , ## args)
+
+#define CX18_ALSA_WARN(fmt, args...) \
+       printk(KERN_WARNING "%s-alsa: " fmt, v4l2_dev->name , ## args)
+
+#define CX18_ALSA_INFO(fmt, args...) \
+       printk(KERN_INFO "%s-alsa: " fmt, v4l2_dev->name , ## args)